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BELL SYSTEM TECHNICAL JOURNAL 



Fig. 22 — RF loads for different bands in the microwave frequency range. 



?1 STRIP MOVING VERTICALLY IN GUIDE 





TERMINATIONS 



b. WAVE GUIDE BELOW CUTOFF 

 Fig. 23 — Microwave attenuators. 



ment and to obtain the minute test signals required for measuring receiver 

 characteristics. Pads serve to change levels and to prevent interaction 



